In order to evaluate how socioeconomic determinants affect the prevalence of oral habits in preschool children, this cross-sectional study was developed. The survey was carried out from October, 1994 to December, 1995. A random sample of 2,139 children aged 3 to 5 years old was evaluated. The children were enrolled in private or public institutions in the Municipal District of Bauru, São Paulo, Brazil. A sub-sample of 618 children presented response to the socioeconomic questionnaire. The considered hypothesis is that socioeconomic determinants affect the psychological status of the child, and it is observed through the development of deleterious oral habits, like dummy-sucking or digit-sucking. The results were tested by bivariate analysis (chi-square test). Some social determinants, like the mother’s employment and the occupation of the person who has the greater income in the household, are related to oral habits (p < 0.05), which in turn are strongly associated with malocclusion.
Epidemiology; Malocclusion; Socioeconomic factors; Oral habits
